278 Transactions. 



from hairs, projects slightly beyond the anterior margin. Small 

 gills are situated around each sucker except the first, as described 

 by Fritz Midler. 



The dorsal surface of each division bears about twelve to 

 fifteen stout, black, sharp spines projecting upwards at right 

 angles to the surface, and the round post margin of the last 

 segment is fringed with a row of slender black hairs. The side 

 lobes are short, about half as broad as long, narrowing to the 

 subacute extremity ; they are lighter in colour than the body, 

 and bear numerous stiff hairs of varying stoutness, but all more 

 slender than the spines on the body. The colour of the body 

 varies from dark-brown to black, the side lobes being light- 

 brown. The larvae live in rapid rocky streams, and by means 

 of their suckers cling to the stones and boulders with consider- 

 able tenacity. 



EXPLANATION OF PLATE XLVI. 



Fig. 1. Dorsal view ; x about ten times. 

 Fig. 2. Ventral view ; X about ten times. 



Art. XXXIV.— Results of Dredging on the Continental Shelf of 



Netv Zealand. 



By R. Murdoch and H. Suter. 

 [Read before the Wellington Philosophical Society, 4th October, 1905.] 



Plates XXI-XXVII. 

 This article is a sequel to Mr. Hedley's paper under the same 

 heading and in this volume. All the shells here enumerated 

 were obtained together with those described by Mr. Hedley 

 and the Rev. W. H. Webster. 



1. Philine constricta, n. sp. Plate XXI, fig. 1. 

 Shell small, thin, convolute, imperforate, spirally grooved, 

 auriform, slightly contracted above. Sculpture consists of shal- 

 low fine spiral grooves, leaving broader bands between them, 

 crossed by irregularly arranged incremental lines. Colour 

 white. Spire concave. Protoconch minute, smooth. Whorls 

 1|, very rapidly increasing, the last very large, contracted 

 below the vertex. Aperture elongately oval, acuminate above. 

 Outer lip sharp, lowly convex, microscopically transversely 

 striated inside ; lower lip regularly rounded. Inner lip forming 

 a broadly spread callosity upon the body, narrow on the concave 

 oblique and twisted columella. Altitude, 5 mm. ; diameter, 

 3 mm. 



